Siphon turbine



E. SUESS S IPHON TURBINE J'une49, 1931.

Filed June 7, 1928 Patented June 9, 1931 UNITED STATES EDUARD SUESS, orVIENNA, AUSTRIA I SIPHON TURBINE Application filed June 7, 1928, SerialNo. 283,658, and in Austriahpril 13, I

This invention relates to fall-turbines with siphon-action and has forits object to render possible the utilization of small falls, to improvethe effect as well as to simplify the construction in such a manner,that the turbine needs not be fixed in position and can be removed fromplace to place without difliculty. According to the invention the effectis improved mainly by a new construction adapted to avoid theknowndetrimental cavitation, which heretofore prevented the use ofsiphon-turbines in an extent worth mentioning.

One mode of carrying out the present invention is illustrated by way ofexample on the accompanying sheet of drawings in which Fig. 1 shows aturbine in longitudinal section.

Fig. 2 is a sectional view thereof, the section being taken on lineII-II of Fig. 1.

The turbine, having the shape of a unit, es-- sentially consists of acasing, which contains a rotor and can be arranged over a suitably builtfall, for instance a weir or overflow 1, in such a manner, that itsinlet and outlet ends are positioned below the head water level and thetail water level respectively. The casing consists of three parts,namely a cylindric inlet pipe 2, a conical suction pipe 3 and abox-shaped connecting member 4. The pipes 2 and 3 are secured at rightangles to the bottom of the said connecting member, whereby the axes ofthe pipes are disposed ,5 parallel to one another. The part of theconnecting member located between the flanges for connecting the saidpipes is of rectangular cross section forming a platform. The rotor 5 ismounted on a vertical shaft 6 in the admission opening of the casing,the said shaft being enclosed in a tube 7 which tightly fits to the roofof the intermediate member. The bottom end of the tube is mounted in .abearing 8, which is provided with webs 9, resting against the inner wallof the inlet 1 e 2. p The bottom end of the tube 7 is slightly enlargedand a stuffing box 10 is arranged in the same just behind the rotor,said box being thus always disposed below water. The

vanes of the rotor extend closely to the bot tom face of the webs 9, sothatforeign parts such as twigs,.branches or small'pieces of wood, whichmay have entered, are cut up. The diameter of the boss 11 of the rotoris of considerable size and,t.og'ether with the bearing member-'8 and aconical sleeve'12 secured thereto, formsa core within the inlet pipe,whereby the clear cross-sectional area of the same is enlarged from thebottom to the top and thus causes a certain amount of suction. Agearing'is arranged on the roof of the intermediate member 4 andtransmits the rotation of the shaft 6 to a dynamo also mounted on' thesaid intermediate member.

Theentire casing is suspended by chains 13. The intermediate member isprovided with a valve 14 furnished with a centrifugal gov ernor15'c0n'nected with the shaft 6'. The pipes 2 and 3 are'securedtotheintermediate member 4 by means of flanges. .Therefore it is possibletoadapt the arrangementt o a changing tail waterlevel by exchanging thesuction pipe.

It has been foundthat in a turbine of the construction described, evenin case of a varying load, cavitation cannot take place within thecasing, owing mainly to the arrange ment of the rotor in the'admissionopening of the inlet pipe, and-further to the fact, that the rotor reststotally below the head water level and the water behind the rotor isbound to raise vertically. In View thereof the efficiency of the turbineis very good and is still further increased by the short way of thewater within the casing and the reduction of all frictional resistancesconnected therewith. The arrangement needs to be submerged only aminimum in view of the vertical arrangement of the pipes 2 and 3.

The packing is most favorable owing to the provision of the sleevesurrounding the shaft and the arrangement of the stuffing box behind therotor. The arrangement can be readily adapted to the varying waterlevels by raising or lowering the casing, as well as by exchanging thesuction pipe. The number of revolutions is controlled automatically bymeans of the valve, which if desired reduces the siphon-action byintroducing air I100 into the casing. For starting a common pump may beprovided for sucking oil the air, the said pump being connected with theshaft of the turbine. The division of the easing into three parts andthe most simple shape of the parts reduce the costs of manufacture anderection. The turbine can be extensively used owing to its greatindependence from the qualities of place of erection and the smallrequirements regarding fall and depth of water.

I claim 1. A siphon-turbine comprising in combination an inlet pipe, asuction pipe, a boxshaped intermediate member adapted to esteblishcommunication between the two pipes, and a rotor in the admissionopening of the inlet pipe.

2. A siphon-turbine comprising in combination an inlet pipe, a suctionpipe, at boxshaped intermediate member adapted to establishcommunication between the two pipes, and a rotorin the admission openingof the inlet pipe, the suction pipe being detachably secured to thefloor of the intermediate member.

3. A siphon-turbine comprising in combination an inlet pipe, a suctionpipe, a boxsha ed intermediate member adapted to estab ish communicationbetween the two pipes, a rotor in the admission opening of the inlet pie, an air-valve arranged at the roof of the intermediate member, and acentrifugal overnor connected with the Valve and the s aft of theturbine. V

In testimony whereof I have signed my name to this specification.

EDUARD SUESS.

